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comparison src/share/vm/runtime/advancedThresholdPolicy.cpp @ 22762:9d78d44d3aac

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improved JVMCI support for blocking compilation (GRAAL-1387)
author Doug Simon <doug.simon@oracle.com>
date Fri, 08 Jan 2016 17:30:33 +0100
parents 569c82ebb96e
children 24505bf61633
comparison
equal deleted inserted replaced
22761:f2206f5bb62e 22762:9d78d44d3aac
159 return false; 159 return false;
160 } 160 }
161 161
162 // Called with the queue locked and with at least one element 162 // Called with the queue locked and with at least one element
163 CompileTask* AdvancedThresholdPolicy::select_task(CompileQueue* compile_queue) { 163 CompileTask* AdvancedThresholdPolicy::select_task(CompileQueue* compile_queue) {
164 #ifdef COMPILERJVMCI
165 CompileTask *max_blocking_task = NULL;
166 #endif
164 CompileTask *max_task = NULL; 167 CompileTask *max_task = NULL;
165 Method* max_method = NULL; 168 Method* max_method = NULL;
166 jlong t = os::javaTimeMillis(); 169 jlong t = os::javaTimeMillis();
167 // Iterate through the queue and find a method with a maximum rate. 170 // Iterate through the queue and find a method with a maximum rate.
168 for (CompileTask* task = compile_queue->first(); task != NULL;) { 171 for (CompileTask* task = compile_queue->first(); task != NULL;) {
189 if (compare_methods(method, max_method)) { 192 if (compare_methods(method, max_method)) {
190 max_task = task; 193 max_task = task;
191 max_method = method; 194 max_method = method;
192 } 195 }
193 } 196 }
197 #ifdef COMPILERJVMCI
198 if (task->is_blocking()) {
199 if (max_blocking_task == NULL || compare_methods(method, max_blocking_task->method())) {
200 max_blocking_task = task;
201 }
202 }
203 #endif
194 task = next_task; 204 task = next_task;
195 } 205 }
206
207 #ifdef COMPILERJVMCI
208 if (max_blocking_task != NULL) {
209 // In blocking compilation mode, the CompileBroker will make
210 // compilations submitted by a JVMCI compiler thread non-blocking. These
211 // compilations should be scheduled after all blocking compilations
212 // to service non-compiler related compilations sooner and reduce the
213 // chance of such compilations timing out.
214 max_task = max_blocking_task;
215 max_method = max_task->method();
216 }
217 #endif
196 218
197 if (max_task->comp_level() == CompLevel_full_profile && TieredStopAtLevel > CompLevel_full_profile 219 if (max_task->comp_level() == CompLevel_full_profile && TieredStopAtLevel > CompLevel_full_profile
198 && is_method_profiled(max_method)) { 220 && is_method_profiled(max_method)) {
199 max_task->set_comp_level(CompLevel_limited_profile); 221 max_task->set_comp_level(CompLevel_limited_profile);
200 if (PrintTieredEvents) { 222 if (PrintTieredEvents) {